Northern Lights M673L2 Operator's Manual - page 4
OM673L2 08/05
Servicing of marine engines and generator sets
presents unique problems. In many cases boats cannot
be moved to a repair facility. Marine engines cannot
be compared to the servicing of automobiles, trucks or
even farm equipment. Failures often occur in remote
areas far from competent assistance. Marine engines
are taxed far more severely than auto or truck engines;
therefore, maintenance schedules must be adhered to
more strictly.
Failures begin with minor problems that are over-
looked and become amplified when not corrected
during routine maintenance.
As operator, it is your obligation to learn about your
equipment and its proper maintenance. This is not a
comprehensive technical service manual. Nor will it
make the reader into an expert mechanic. Its aim is
to aid you in maintaining your unit properly.
Introduction
M - Northern Lights marine generator set
Model number of engine block
Bore
Cylinders
67 mm
3
Serial Number
s
MOdELS INcLUdEd
This manual covers the operating instructions for:
M673L2 and M673Ld2 marine generator sets.
Model Numbers
Model numbers give the unit's application, block model, aspiration, and RPM:
+
Unit Identification
Northern Lights marine diesel generator set with a 673 engine long stroke, TF-276D
generator end, Tier II compliant.
M673L2
M
673
=
Your set has three serial numbers:
1
an engine number stamped
on the block,
2
a generator plate, and
3
a generator set plate.
Use the serial number on the generator set plate when ordering parts
or in correspondence. The generator set plate is found on the service
side of the generator and resembles the drawing in
Figure 1
.
Figure 1: Generator set serial number plate.
L, d, 2
+
L - Long Stroke
d - Series designation
2 - Tier II Compliant
Northern Lights marine diesel generator set with a 673 engine long stroke, TF-276D
generator end, Tier II compliant, 5 kW.
M673LD2
=